Quarter	US dollars
2004-12-31	900
2005-03-31	750
2005-06-30	977
2005-09-30	704
2005-12-31	963
2006-03-31	1107
2006-06-30	1352
2006-09-30	1231
2006-12-31	1123
2007-03-31	1412
2007-06-30	1709
2007-09-30	1557
2007-12-31	1621
2008-03-31	1652
2008-06-30	1065
2008-09-30	1155
2008-12-31	1213
2009-03-31	1114
2009-06-30	1271
2009-09-30	987
2009-12-31	1905
2010-03-31	1954
2010-06-30	2146
2010-09-30	2691
2010-12-31	3897
2011-03-31	3685
2011-06-30	5390
2011-09-30	5618
2011-12-31	3544
2012-03-31	8133
2012-06-30	7435
2012-09-30	6847
2012-12-31	6304
2013-03-31	10117
2013-06-30	9978
2013-09-30	10105
2013-12-31	8633
2014-03-31	8362
2014-06-30	7665
2014-09-30	7265
2014-12-31	6399
2015-03-31	6176
2015-06-30	6141
2015-09-30	5989
2015-12-31	5606
2016-03-31	6286
2016-06-30	6052
2016-09-30	5548
2016-12-31	4830
2017-03-31	4430
2017-06-30	4741
2017-09-30	4378
2017-12-31	4415
2018-03-31	3616
2018-06-30	3294
2018-09-30	3413
2018-12-31	2850
2019-03-31	3400
2019-06-30	4160
2019-09-30	3728
2019-12-31	3523
2020-03-31	3340
2020-06-30	3122
2020-09-30	3219
2020-12-31	2920
2021-03-31	2794
2021-06-30	2471
2021-09-30	3158
2021-12-31	3233
2022-03-31	3392
2022-06-30	4119
2022-09-30	4070
2022-12-31	3597
2023-03-31	3612
2023-06-30	3701
2023-09-30	3746